1 files changed, 62 insertions, 0 deletions
diff --git a/lib/ntdb/test/run-features.c b/lib/ntdb/test/run-features.c
new file mode 100644
index 0000000000..0d6b3bce76
--- /dev/null
+++ b/lib/ntdb/test/run-features.c
@@ -0,0 +1,62 @@
+#include "ntdb-source.h"
+#include "tap-interface.h"
+#include "logging.h"
+
+int main(int argc, char *argv[])
+{
+	unsigned int i, j;
+	struct ntdb_context *ntdb;
+	int flags[] = { NTDB_DEFAULT, NTDB_NOMMAP,
+			NTDB_CONVERT, NTDB_NOMMAP|NTDB_CONVERT };
+	NTDB_DATA key = { (unsigned char *)&j, sizeof(j) };
+	NTDB_DATA data = { (unsigned char *)&j, sizeof(j) };
+
+	plan_tests(sizeof(flags) / sizeof(flags[0]) * 8 + 1);
+	for (i = 0; i < sizeof(flags) / sizeof(flags[0]); i++) {
+		uint64_t features;
+		ntdb = ntdb_open("run-features.ntdb", flags[i],
+			       O_RDWR|O_CREAT|O_TRUNC, 0600, &tap_log_attr);
+		ok1(ntdb);
+		if (!ntdb)
+			continue;
+
+		/* Put some stuff in there. */
+		for (j = 0; j < 100; j++) {
+			if (ntdb_store(ntdb, key, data, NTDB_REPLACE) != 0)
+				fail("Storing in ntdb");
+		}
+
+		/* Mess with features fields in hdr. */
+		features = (~NTDB_FEATURE_MASK ^ 1);
+		ok1(ntdb_write_convert(ntdb, offsetof(struct ntdb_header,
+						    features_used),
+				      &features, sizeof(features)) == 0);
+		ok1(ntdb_write_convert(ntdb, offsetof(struct ntdb_header,
+						    features_offered),
+				      &features, sizeof(features)) == 0);
+		ntdb_close(ntdb);
+
+		ntdb = ntdb_open("run-features.ntdb", flags[i], O_RDWR, 0,
+			       &tap_log_attr);
+		ok1(ntdb);
+		if (!ntdb)
+			continue;
+
+		/* Should not have changed features offered. */
+		ok1(ntdb_read_convert(ntdb, offsetof(struct ntdb_header,
+						   features_offered),
+				     &features, sizeof(features)) == 0);
+		ok1(features == (~NTDB_FEATURE_MASK ^ 1));
+
+		/* Should have cleared unknown bits in features_used. */
+		ok1(ntdb_read_convert(ntdb, offsetof(struct ntdb_header,
+						   features_used),
+				     &features, sizeof(features)) == 0);
+		ok1(features == (1 & NTDB_FEATURE_MASK));
+
+		ntdb_close(ntdb);
+	}
+
+	ok1(tap_log_messages == 0);
+	return exit_status();
+}